<?php
/**
 * StaticData
 * A primitive static data reader 
 *
 * @author      Jens Arps <mail@jensarps.de>
 * @link        http://jensarps.de
 * @license     http://www.opensource.org/licenses/lgpl-3.0.html LGPL
 *
 */
class YourProject_StaticData
{
	/**
	 * 
	 * @var array data	the container for all collected data
	 */
	private $data = array();
	
	static private $instance = null;
	
    static public function getInstance()
    {
        if (self::$instance === null)
        {
            self::$instance = new self;
        }
        return self::$instance;
    }
    
    private function __construct(){}
    
    private function __clone(){}
    
    /**
     * collectStaticData
     * collects static data. run this method during the bootstrapping process.
     * 
     */
    function collectStaticData()
    {
    	$staticPath = PATH.'static/';
    	$entries = scandir($staticPath);
    	foreach($entries as $item)
    		if(is_file($staticPath.$item) and end(explode('.',$item)) === 'data')
    			$this->data[basename($item,'.data')] = parse_ini_file($staticPath.$item,true);
    }
    
    /**
     * getSection
     * returns a section of data
     * 
     * @param string $section the name of the section (i.e., the basename of the file)
     * @return array the section, if found, or an empty array if not
     */
    function getSection($section)
    {
    	return empty($this->data[$section]) ? array() : $this->data[$section];
    }
    
    /**
     * getSubSection
     * return a specific key of a section
     * 
     * @param string $section the name of the section
     * @param string $key 
     * @return mixed the value, if thet given key is found in the given section, or null if not
     */
    function getSubSection($section,$key)
    {
    	$sectionData = $this->getSection($section);
    	return empty($sectionData[$key]) ? null : $sectionData[$key];
    }
    
    /**
     * getAll
     * returns all collected data
     * 
     * @return array all collected data
     */
    function getAll()
    {
    	return $this->data;
    }
    
    /**
     * get
     * shorthand for "getSection"
     * 
     * @see getSection
     */
    function get($section)
    {
    	return $this->getSection($section); // section shorthand
    }
}